A new section covering PSOM -- primary secretory otitis media, or middle ear disease -- is now included on the SM Infosite. So little information is available on PSOM, and because of the frequency with which it appears on cavalier MRIs, and the similarity between some SM and PSOM symptoms, I felt further information on PSOM belonged on the SM site.

The main section for PSOM is here: http://sm.cavaliertalk.com/psom.htm

Betsey Lynch has kindly given permission to include an article she wrote on a diagnosis of SM and PSOM in one of her cavaliers, taken from the current CKCS Bulletin; you can read it here: http://sm.cavaliertalk.com/psomlynch.htm